CN101735708B - Anti-ageing epoxy paint, preparation method and application thereof - Google Patents
Anti-ageing epoxy paint, preparation method and application thereof Download PDFInfo
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- CN101735708B CN101735708B CN201010019342XA CN201010019342A CN101735708B CN 101735708 B CN101735708 B CN 101735708B CN 201010019342X A CN201010019342X A CN 201010019342XA CN 201010019342 A CN201010019342 A CN 201010019342A CN 101735708 B CN101735708 B CN 101735708B
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Abstract
The invention discloses anti-ageing epoxy paint, a preparation method and an application thereof. The anti-ageing epoxy paint is prepared by the following components: 30-55 parts of epoxy resin, 0-5 parts of reactive diluent, 5-15 parts of pigment, 22.5-40 parts of filler, 1.0-2.0 parts of aids, 0.5-5.0 parts of anti-ageing agent, 40-80 parts of amine curing agent and 20-70 parts of solvent, wherein the anti-ageing agent is a substance with a hinderde-amine structure. In the invention, the solvent, epoxy resin, reactive diluent, anti-aging agent and auxiliary agent are mixed, then added with pigment and filler, mixed evenly, filtrated to obtain component A; the amine curing agent and the solvent are mixed evenly and filtrated to obtain component B; and before coating, component A and component B are mixed to obtain the anti-aging epoxy paint. The anti-ageing agent epoxy paint prepared by the invention has the advantages of low cost, long stationary phase for storage and excellent weather resistance, can meet the requirement of long-term outdoor application, and is applicable to floor coating, paint for internal and external walls and protective coating of steel structures.
Description
Technical field
The invention belongs to paint field, particularly a kind of anti-ageing epoxy paint and preparation method thereof and application.
Background technology
The tradition epoxy coating has advantages such as cohesive strength height, endurance are excellent, wide adaptability, can satisfy the most demand of modern industry to application.But; Mostly the base-material of tradition epoxy coating is to have the bisphenol A type epoxy resin of phenyl ring backbone structure; Phenyl ring in resin self chemical structure receives the aging decomposition of UV-irradiation easily; Make when epoxy coating uses out of doors that phenomenon such as occur efflorescence, variable color easily and fade has a strong impact on epoxy coating use out of doors.
For improving the defective of traditional epoxy coating easy ageing; The hydrogenation epoxies of costliness that adopt cooperate alicyclic amine solidifying agent more; So no doubt can solve problem of aging; But the basic material of these two types of materials mainly depends on import, and this makes that the outdoor epoxy coating that has anti-aging function at present on the market is with high costs, is difficult to meet the need of market.
Summary of the invention
The shortcoming that the objective of the invention is to overcome prior art provides a kind of anti-ageing epoxy paint with not enough.This anti-ageing epoxy paint cost is low, can satisfy the demand of long-term outdoor use, can be applicable to fields such as Floor paint, exterior coating, metallic paint.
Another object of the present invention is to provide the preparation method of said anti-ageing epoxy paint.
A purpose again of this area is to provide the application of said anti-ageing epoxy paint.
The object of the invention is realized through following technical proposals: a kind of anti-ageing epoxy paint is grouped into by following one-tenth according to the mass fraction:
The A component:
30～55 parts of epoxy resin
0～5 part of reactive thinner
5～15 parts of pigment
22.5～40 parts of fillers (800～1500 order)
1.0～2.0 parts of auxiliary agents
0.5～5.0 part of inhibitor
0～10 part of solvent;
The B component:
40～80 parts of amine curing agents
20～60 parts of solvents;
Described epoxy resin is preferably conventional bisphenol A type epoxy resin according to the economic serviceability principle; More preferably epoxy equivalent (weight) is at the liquid bisphenol A of 180～190g/eq type epoxy resin for the oiliness system, and water-based system is the aqueous epoxy resin emulsion of weight-average molecular weight Mw between 2000～3000 more preferably; This is in order to guarantee that coating has high cross-linking density, also be convenient to the uniform mixing of solidifying agent to resin for prepared epoxy coating has long serviceable time and convenient processing, to have certain rigidity and rub resistance thereby film after solidifying simultaneously;
Described reactive thinner is for can participate in curing reaction; Be used to adjust the single epoxy group(ing) reactive thinner of system viscosity and reactive routine, include but not limited to that butylglycidyl ether (BGE), glycidyl allyl ether (AGE) and the carbon chain lengths used always are C
12～C
14Alkyl glycidyl ether etc., the preferred carbon chain lengths of the present invention is C
12～C
14Alkyl glycidyl ether;
Said pigment does not also have particular requirement, and the present invention guarantees that prepared coating has the good effect of filming, and the preferable mineral dye of preferred weathering resistance is as tinting pigment, and concrete materials are confirmed according to customer demand;
Described filler is an epoxy coating filler commonly used, requires particle diameter between 800～1500 orders, specifically all can use like permanent white, lime carbonate, talcum powder etc.;
Described auxiliary agent mainly refers to skimmer, flow agent and wetting dispersing agent etc.; Include but not limited to the epoxy systems special assistant of BYK company and the adjuvant system of the modest chemistry of moral etc.; The present invention is according to actual request for utilization and surface effect, the part of auxiliary system of preferred BYK and the modest chemistry of moral.Specifically select 6800 of the modest chemistry of moral for use like oiliness system skimmer, dispersion agent is selected the 904S of the modest chemistry of moral for use, and flow agent is selected 331 of BYK for use; The water-based system skimmer is selected 082 of the modest chemistry of moral for use, and dispersion agent is selected the W19 of the modest chemistry of moral for use, and flow agent is selected 461 of BYK for use; In addition, for giving the good resistance to marring of paint film after the application, (moral is modest: Mo-4615) also in system, to add an amount of organic wax powder;
Described inhibitor refers to one type of chemical substance with the structure of hindered amine.Shown in following reaction formula; Have the bulky amine structure compound since its molecule in uncle N nuclear power under the condition of photoxidation; Transform (or part transforms) and become the nitroxyl radical; This nitro radical can be caught the radical that produces owing to the light-initiated cracking of resin phenyl ring, to avoid the further aging damage of resin.
Yet owing to be thermosetting material after the epoxy coating film forming, film forming matter is intermolecular to be difficult to exist activity space, and this just makes that the capturing ability of conventional hindered amine is limited.In addition because the structure of hindered amine compound is the tertiary amines material in fact, when the improper solidified risk that will cause promoting epoxy coating of small molecules group selection that is used to shield hindered amine.
The comprehensive above consideration of the present invention preferably has suc as formula the chemical substance shown in I or the formula II as inhibitor:
R1, R2 are all the chain alkyl that carbon chain lengths is 8～12 carbon;
Wherein the long-chain flexible structure of R1, R2 gives inhibitor certain activity space, reaches the purpose that suppresses photooxidation reaction; The inductive effect of the shielding group of tool Sauerstoffatom can reduce the activity of uncle N atom simultaneously, avoids because the influence that ageing-resistant interpolation brings the coating stability in storage.
Described inhibitor include but not limited to by Ciba company 770, the GW-770 of will one chemical company and ASA-150 (having above-described the structure of hindered amine) of Beijing Chemical Research Institute or the like; The preferred ASA-150 of the present invention, GW-770 are as inhibitor, and these two types of materials also have advantage with low cost when having said structure;
Described inhibitor is preferably 0.2～2.0 mass parts;
Described solvent is a boiling point at 80～150 ℃ organic solvent or water; Solvent is that the water-soluble ageing resistance epoxy coating that water obtains more meets environmental protection requirement;
The preferred low toxic and environment-friendly of described organic solvent, the n-butyl acetate of non-stimulated smell and propylene glycol monomethyl ether;
Described amine curing agent includes but not limited to the amine curing agent of 3224,3225,3985 and other manufacturers of Huntsman Corporation; For guaranteeing excellent weather-proof effect; The present invention preferred 3225 is as oiliness system solidifying agent, and the present invention preferably uses 3985 as solidifying agent when water-based system.
The preparation method of said anti-ageing epoxy paint may further comprise the steps:
(1) 0～10 mass parts solvent, 30～55 mass parts epoxy resin, 0～5 mass parts reactive thinner, 0.5～5.0 mass parts inhibitor and 1.0～2.0 mass parts auxiliary agents are stirred 10～20min in 1000～1200rpm; And then add 5～15 mass parts pigment and 22.5～40 mass parts fillers; Stir 30～60min with 1000～1200rpm; Filter, obtain component A;
(2) 40～80 mass parts amine curing agents and 20～60 mass parts solvents are stirred 10～15min mixing in 800～1000rpm, filter, obtain B component;
(3) before the application, component A and B component are mixed, and obtain anti-ageing epoxy paint.
Described, component A and B component are mixed to mix according to the reactive hydrogen equivalent of amine curing agent and the concrete ratio requirement of epoxy equivalent (weight) of epoxy resin.Different according to using, will in commodity packaging, provide.
Described anti-ageing epoxy paint is applied to floor application, coating for internal and external wall and steelwork protective coating.
The present invention has following advantage and effect with respect to prior art: cost is low, and the stable storing phase is long, and weather resistance is excellent, can satisfy the requirement of outdoor prolonged application.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, but embodiment of the present invention is not limited thereto.
Embodiment 1
(1) with 10 mass parts propylene glycol monomethyl ethers, 40 mass parts liquid epoxiess (the grand prosperous electronics of GELR128), 2 mass parts C
12～C
14Alkyl glycidyl ether (grand prosperous electronics), 0.2 mass parts GW-770,0.8 mass parts ASA-150,0.4 mass parts skimmer (moral modest chemical 6800), 0.4 mass parts flow agent (BYK331), 0.2 mass parts wetting dispersing agent (the modest chemical 904S of moral) and the organic wax powder of 1 mass parts (the modest chemical Mo-4615 of moral) stir the 15min mixing in 1200rpm; Then add again 5 mass parts tinting pigments (by titanium white and carbon black press that mass ratio 9: 1 mixes and the pearl tinting pigment), 5 mass parts silica powders (1250 order) and 30 mass parts lime carbonate (800 order); 1000rpm stirs the 60min mixing; Filter, obtain the component A that epoxy equivalent (weight) is 452g/eq;
(2) 55 mass parts Hensels are stepped 3225 and 45 mass parts propylene glycol monomethyl ethers and stir the 15min mixing in 800rpm, filter, obtaining the reactive hydrogen equivalent is the 144g/eq B component;
(3) before the application, component A and B component are mixed by mass ratio at 3: 1, promptly get the anti-ageing epoxy paint that is used for outdoor terrace application.
This anti-ageing epoxy paint is a grey, is used for outdoor terrace application, has water-fast and chemical corrosion, and hardness is high, and wear resistance is excellent, the characteristics of excellent shock resistance.Test piece is through 1500h artificial weathering test (test is carried out according to " GB/T 1865-1997 paint and varnish artificial weathering and man-made radiation expose "), and the result is as shown in table 1, and obvious variable color was not seen in actual outdoor application test in 2 years, and dry linting etc. are unusual.
Embodiment 2
(1) 55 mass parts aqueous epoxy resins (the grand prosperous electronics of GEEW102W50), 1 mass parts GW-770,3 mass parts ASA-150,0.4 mass parts skimmer (moral modest chemical 082), 0.2 mass parts flow agent (moral modest chemical 461), 0.4 mass parts wetting dispersing agent (the modest chemical W19 of moral) and the organic wax powder of 1 mass parts (the modest chemical Mo-4615 of moral) are stirred the 15min mixing in 1200rpm; Then add 5 mass parts Rutile type Titanium Dioxides (the chemistry R706 of Du Pont) and 34 mass parts calcined kaolins (1200 order) again; 1200rpm stirs 60min; The mixing after-filtration, obtaining epoxy equivalent (weight) is the component A of 2180g/eq;
(2) 52 mass parts Hensels are stepped 3985 and 48 mass parts deionized waters and stir the 10min mixing, filter, obtain the B component that the reactive hydrogen equivalent is 501g/eq in 1000rpm;
(3) before the application, component A and B component are mixed with mass ratio at 4: 1, promptly get the anti-aging epoxy exterior coating that is used for the exterior wall application.
This anti-ageing epoxy paint is an oyster white, has high-grade mute light effect, and is water-fast, spot-resistant, and scrubbing resistance has more the long-acting mould-proof effect.Test piece is through 1500h artificial weathering test (test is carried out according to " artificial weathering of GB/T1865-1997 paint and varnish and man-made radiation expose "), and the result is as shown in table 1, and obvious variable color was not seen in actual outdoor application test in 2 years, and dry linting etc. are unusual.
Embodiment 3
(1) with 10 mass parts n-butyl acetates, 42 mass parts liquid epoxiess (the grand prosperous electronics of GELR128), 2 mass parts C
10～C
12Alkyl glycidyl ether (grand prosperous electronics), 1.8 mass parts GW-770,0.7 mass parts ASA-150,0.4 mass parts skimmer (BYK-011), 0.4 mass parts flow agent (the modest chemical W-461 of moral), 0.2 mass parts wetting dispersing agent (the modest chemical W-098 of moral) and the organic wax powder of 1 mass parts (the modest chemical Mo-4615 of moral) stir the 15min mixing in 1200rpm and stir the 15min mixing in 1200rpm; Then add 10 mass parts tinting pigments (red iron oxide), 18.5 mass parts permanent white (1200 order) and 4 mass parts talcum powder (800 order) again; 1000rpm stirs the 60min mixing; Filter, obtain the component A that epoxy equivalent (weight) is 420g/eq;
(2) 80 mass parts Hensels are stepped 3225 and 20 mass parts n-butyl acetates and stir the 15min mixing, filter, obtain the B component that the reactive hydrogen equivalent is 98g/eq in 800rpm;
(3) before the application, component A and B component are mixed with mass ratio at 5: 1, promptly get the anti-ageing epoxy paint that is used for steel structure rust preventive painting.
This anti-ageing epoxy paint is red fluid, have water-fast, resistance to chemical attack, the advantage that hardness is high, through 1500h accelerated deterioration test, obvious variable color was not seen in actual outdoor application test in 2 years, dry linting, come off etc. unusual.
Effect embodiment:
The embodiment of the invention 1～3 prepared product is compared with common on the market weather-proof hydrogenation epoxy coating and conventional indoor floor epoxy coating, and the result is as shown in table 1 for the experiment contrast test:
Table 1 experiment contrast test result
Test result shows: the prepared anti-aging epoxy coating series of the present invention has the characteristics of economy, excellent weather resistance and hard, through 1500h artificial weathering test, has only slight aberration to change, and obviously is superior to conventional epoxy coating.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (8)
1. anti-ageing epoxy paint is characterized in that being grouped into by following one-tenth according to the mass fraction:
The A component:
Described filler is 800～1500 orders;
Described inhibitor is the GW-770 of will one chemical company and the ASA-150 of Beijing Chemical Research Institute;
Described solvent is that boiling point is 80～150 ℃ organic solvent or a water.
2. anti-ageing epoxy paint according to claim 1 is characterized in that: described epoxy resin is bisphenol A type epoxy resin.
3. anti-ageing epoxy paint according to claim 1 is characterized in that:
When described solvent was water, described epoxy resin was weight-average molecular weight at 2000～3000 aqueous epoxy resin emulsion;
Described solvent is a boiling point when being 80～150 ℃ organic solvent, and described epoxy resin is that epoxy equivalent (weight) is at the liquid bisphenol A of 180～190g/eq type epoxy resin.
4. anti-ageing epoxy paint according to claim 1 is characterized in that: described reactive thinner is single epoxy group(ing) reactive thinner.
5. anti-ageing epoxy paint according to claim 4 is characterized in that: described single epoxy group(ing) reactive thinner is that butylglycidyl ether, glycidyl allyl ether or carbon chain lengths are C
12～C
14Alkyl glycidyl ether at least a.
6. the preparation method of each said anti-ageing epoxy paint of claim 1～5 is characterized in that may further comprise the steps:
(1) 0～10 mass parts solvent, 30～55 mass parts epoxy resin, 0～5 mass parts reactive thinner, 0.5～5.0 mass parts inhibitor and 1.0～2.0 mass parts auxiliary agents are stirred 10～20min in 1000～1200rpm; And then add 5～15 mass parts pigment and 22.5～40 mass parts fillers; Stir 30～60min with 1000～1200rpm; Filter, obtain component A;
(2) 40～80 mass parts amine curing agents and 20～60 mass parts solvents are stirred 10～15min mixing in 800～1000rpm, filter, obtain B component;
(3) before the application, component A and B component are mixed, and obtain anti-ageing epoxy paint.
7. preparation method according to claim 6: said component A and B component are mixed to mix according to the reactive hydrogen equivalent of amine curing agent and the concrete ratio requirement of epoxy equivalent (weight) of epoxy resin.
8. each described anti-ageing epoxy paint of claim 1～5 is applied to floor application, coating for internal and external wall and steelwork protective coating.
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Owner name: GUANGZHOU LEOBO PAINTING TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGZHOU FEIYU SCIENCE + TECHNOLOGY FOR BUILDING MATERIALS CO., LTD. |
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Address after: 510735 Guangdong, Whampoa, Lu Lu Lu Road, No. 319, building No. 102, room 1, room Patentee after: GUANGZHOU LEOBO PAINT SCIENCE & TECHNOLOGY CO., LTD. Address before: 510735 No. 319, No. 1, deer step street, Sha Bu Industrial Zone, Nangang Town, Whampoa District, Guangdong, Guangzhou Patentee before: Guangzhou Feiyu Science & Technology for Building Materials Co., Ltd. |